Abstract
High-resolution scheme presents an important application value in discontinuous problems, such as in explosive detonation with high pressure. In this study, a high-resolution Eulerian reaction hydrodynamic code is written based on a two-dimensional axisymmetry in a cylindrical coordinate system. The Level-set method is used to track the motion interface between the explosive/reaction product and inert medium. The entropy-based CREST model and pressure-based ignition and growth model are both used to calculate the detonation diffraction at the corner turning in the TATB-based explosive. A multi-criterion reaction-rate model, which combines the two aforementioned reaction models, is also proposed. The results show that the multi-criterion reaction model can directly calculate the dead zone without extra desensitization modification, and the height of the dead zone is basically consistent with that in the experiment.
| Translated title of the contribution | High-resolution numerical simulation of detonation diffraction |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 281-292 |
| Number of pages | 12 |
| Journal | Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica |
| Volume | 51 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2021 |